saprolite

noun 0.581

bedrock

noun 0.577

laterite

noun 0.562

pedology

noun 0.553

lithology

noun 0.551

protolith

noun 0.551

soil

noun 0.534

lithosphere

noun 0.523

colluvium

noun 0.516

living rock

noun 0.513

loam

noun 0.508

granulite

noun 0.505

topsoil

noun 0.504

rog

noun 0.500